EP 3199656 B1 20190410 - COLD WORK TOOL MATERIAL AND METHOD FOR MANUFACTURING COLD WORK TOOL
Title (en)
COLD WORK TOOL MATERIAL AND METHOD FOR MANUFACTURING COLD WORK TOOL
Title (de)
KALTWERKZEUGMATERIAL UND VERFAHREN ZUR HERSTELLUNG EINES KALTWERKZEUGS
Title (fr)
MATÉRIAU POUR OUTIL À FROID ET PROCÉDÉ DE FABRICATION D'OUTIL FROID
Publication
Application
Priority
- JP 2014196035 A 20140926
- JP 2015074902 W 20150902
Abstract (en)
[origin: EP3199656A1] The invention provides a cold work tool material which can obtain a high hardness over a wide range of tempering temperatures, and a method of manufacturing a cold work tool with the cold work tool material. The cold work tool material has an annealed structure including carbides, and has a composition including, in mass%, C: 0.80% to 2.40%, Cr: 5.0% to 15.0%, Mo and W contained alone or in combination in an amount of (Mo + 1/2W): 0.50% to 3.00%, and V: 0.10 to 1.50%, and adjusted such that the material has a martensitic structure by quenching. The cold work tool material includes a cross sectional region of an annealed structure, the region having a length of 90 µm and a width of 90 µm and including no carbides having a circle equivalent diameter exceeding 5.0 µm. In the cross sectional region, a proportion of a number of carbides B having a circle equivalent diameter of more than 0.1 µm and not more than 0.4 µm to a number of carbides A having a circle equivalent diameter of exceeds 0.1 µm and not more than 2.0 µm is greater than 80.0%. The method of manufacturing a cold work tool includes a step of quenching and tempering the above cold work tool material.
IPC 8 full level
C22C 38/00 (2006.01); C21D 1/18 (2006.01); C21D 8/02 (2006.01); C21D 9/00 (2006.01); C22C 37/06 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/26 (2006.01); C22C 38/34 (2006.01); C22C 38/36 (2006.01); C22C 38/44 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP KR US)
C21D 1/18 (2013.01 - EP KR US); C21D 8/0221 (2013.01 - EP US); C21D 9/0068 (2013.01 - EP US); C22C 37/06 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/22 (2013.01 - EP KR US); C22C 38/24 (2013.01 - EP KR US); C22C 38/26 (2013.01 - EP US); C22C 38/34 (2013.01 - EP US); C22C 38/36 (2013.01 - EP US); C22C 38/44 (2013.01 - EP US); C22C 38/60 (2013.01 - KR); C21D 2211/004 (2013.01 - EP US); C21D 2211/008 (2013.01 - KR)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3199656 A1 20170802; EP 3199656 A4 20170920; EP 3199656 B1 20190410; CN 105637108 A 20160601; CN 105637108 B 20170811; JP 2017025413 A 20170202; JP 6057141 B2 20170111; JP WO2016047396 A1 20170427; KR 101828228 B1 20180209; KR 20170036125 A 20170331; TR 201909240 T4 20190722; TW 201615862 A 20160501; TW I592502 B 20170721; US 2017204486 A1 20170720; US 9890435 B2 20180213; WO 2016047396 A1 20160331
DOCDB simple family (application)
EP 15832776 A 20150902; CN 201580001701 A 20150902; JP 2015074902 W 20150902; JP 2016184417 A 20160921; JP 2016500419 A 20150902; KR 20177007878 A 20150902; TR 201909240 T 20150902; TW 104131199 A 20150922; US 201514914380 A 20150902